package com.hmall.gateway.filter;


import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Order
@Component
public class AuthorizeFilter implements GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //获取请求参数
        MultiValueMap<String, String> params = exchange.getRequest().getHeaders();
        //获取authorization参数
        String authorization = params.getFirst("authorization");


        //检验
        if ("2".equals(authorization)){
            //放行
            return chain.filter(exchange);
        }
        //拦截
        //禁止访问，设置状态
        exchange.getResponse().setStatusCode(HttpStatus.FORBIDDEN);
        //结束处理
        return exchange.getResponse().setComplete();

    }
}
